What definition is dynamically being illustrated here? [br]What specific property (theorem) about this term is also being illustrated here?[br][br](Feel free to move the white point anywhere you'd like! You can also adjust the sliders.)
[color=#000000][b]Definition of an Ellipse:[/b][/color][br]An ellipse is a locus (set) of points in the plane for which he sum of the distances from these points to 2 other fixed points (in that same plane) is constant. [br][br][b][color=#000000]Property: [/color][/b][br]The value of this special constant of an ellipse = 2a = the length of the ellipse's major axis. [br](i.e. [color=#980000][b]brown[/b][/color] + [color=#38761d][b]green[/b][/color] = [b][color=#000000]major axis[/color][/b]). [br][br]